2.He said that very clearly so that nobody was in any________about what was meant. A.doubt
B.case C.question
D.wonder 解析:选A.句意:他说得很明确了,因此没有人对他的意思表示怀疑.doubt“怀疑”;case“情况”;question“问题”; wonder“惊奇,奇迹”.
3.Without electricity,human life________quite different today. A.is
B.will be C.would have been
D.would be
解析:选D.考查虚拟语气的用法.表示与现在事实相反时,条件从句谓语动词用过去式,主句谓语动词用would+动词原形,这里用Without electricity(=If there were no electricity)引出了虚拟条件.
4.(2017·河南郑州质检)By the time he realizes the mistake he______,it will be too late for him to do anything about it. A.has made
B.made C.makes
D.will make
解析:选A.句意:在他意识到他所犯的错误的时候,再采取任何措施已经为时已晚.显然,在他意识到犯错误的时候,他已经犯下错误,因此应用现在完成时.
温馨提示 请做课时作业 选修七 Unit 20 本部分内容讲解结束 按ESC键退出全屏播放 解析:选D.句意:我过去和朋友们靠书信交流,而现在用互联网更方便了.correspond with“与……通信”;meet with“碰见”;come up with“提出”;put up with“容忍”.
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